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A platform for research: civil engineering, architecture and urbanism
Bridge deck accessory structure and main bridge T-shaped cantilever box girder dismantling method
The invention discloses a bridge deck accessory structure and main bridge T-shaped cantilever box girder dismantling method. In a bridge deck accessory structure, a concrete crash barrier is dismantled in a pre-hoisting mode and integrally cut together with a T-shaped flange plate. A T-shaped cantilever box girder is dismantled by adopting a bridge deck dismantling machine. The bridge deck dismounting machine is light and flexible in design, and a single bridge deck dismounting machine is of a self-stabilizing structure under the working condition of not bearing loads and can conveniently movelongitudinally and transversely. In the bridge dismounting process, two bridge deck cranes are adopted on the same section, and when the cutting progresses of webs on the two sides are different in the bridge dismounting process, the hoisting pre-tightening force can be effectively adjusted. The winches of the deck cranes are anchored on the upper side of a No.0 block, namely the pier top, an operator is also located on the pier top, the operator is prevented from being directly located on a to-be-disassembled block section, and the construction safety can be effectively improved.
一种桥面附属结构及主桥T构悬臂箱梁的拆除方法，桥面附属结构中混凝土防撞护栏的拆除采用预吊装、连同T构翼缘板整体切割的方式。T构悬臂箱梁采用了桥面拆桥机进行拆除。本发明采用的桥面拆桥机设计轻巧灵活，单台在不受荷载的工况下为自稳结构，可以很方便的进行纵向和横向移动。拆桥过程中，同一截面采用两台桥面吊机，在拆桥过程中两侧腹板切割进度不同的时候，可以有效的调整起吊预紧力。本发明用的桥面吊机的卷扬机锚固在0号块的上侧即墩顶上，操作人员也位于墩顶，避免人员直接位于待拆块段上，可以有效提高施工安全性。
Bridge deck accessory structure and main bridge T-shaped cantilever box girder dismantling method
The invention discloses a bridge deck accessory structure and main bridge T-shaped cantilever box girder dismantling method. In a bridge deck accessory structure, a concrete crash barrier is dismantled in a pre-hoisting mode and integrally cut together with a T-shaped flange plate. A T-shaped cantilever box girder is dismantled by adopting a bridge deck dismantling machine. The bridge deck dismounting machine is light and flexible in design, and a single bridge deck dismounting machine is of a self-stabilizing structure under the working condition of not bearing loads and can conveniently movelongitudinally and transversely. In the bridge dismounting process, two bridge deck cranes are adopted on the same section, and when the cutting progresses of webs on the two sides are different in the bridge dismounting process, the hoisting pre-tightening force can be effectively adjusted. The winches of the deck cranes are anchored on the upper side of a No.0 block, namely the pier top, an operator is also located on the pier top, the operator is prevented from being directly located on a to-be-disassembled block section, and the construction safety can be effectively improved.
一种桥面附属结构及主桥T构悬臂箱梁的拆除方法，桥面附属结构中混凝土防撞护栏的拆除采用预吊装、连同T构翼缘板整体切割的方式。T构悬臂箱梁采用了桥面拆桥机进行拆除。本发明采用的桥面拆桥机设计轻巧灵活，单台在不受荷载的工况下为自稳结构，可以很方便的进行纵向和横向移动。拆桥过程中，同一截面采用两台桥面吊机，在拆桥过程中两侧腹板切割进度不同的时候，可以有效的调整起吊预紧力。本发明用的桥面吊机的卷扬机锚固在0号块的上侧即墩顶上，操作人员也位于墩顶，避免人员直接位于待拆块段上，可以有效提高施工安全性。
Bridge deck accessory structure and main bridge T-shaped cantilever box girder dismantling method
桥面附属结构及主桥T构悬臂箱梁的拆除方法
DENG HONGJUN (author) / KANG LIANGRUI (author) / XIE MANJIA (author) / ZHENG RIHUA (author) / LI XIAOHUI (author) / LI ZIKUN (author) / CHEN XIAOLI (author) / WANG XIAOHENG (author) / ZENG FANXING (author) / YE ZHIPENG (author)
2020-04-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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